http://d.puremagic.com/issues/show_bug.cgi?id=7129

           Summary: Compiling certain nested structs with -inline causes
                    error "*** is a nested function and cannot be accessed
                    from ***"
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Severity: regression
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: torarind@gmail.com


--- Comment #0 from Torarin <torarind@gmail.com> 2011-12-18 15:27:19 PST ---
This regression was introduced with the 2.057 release.

I first hit the issue with code resembling the following:
---------------------------------------------------------
import std.stdio, std.algorithm;

void main() {
 writeln(filter!"a != 'r'"("Merry Christmas!"));
}
--------------------------------------------------------
Compiling with -inline gives:
/src/phobos/std/algorithm.d(1120): Error: function
std.algorithm.filter!("a != 'r'").filter!(string).filter is a nested
function and cannot be accessed from formatValue

This reduced test case gives a clue as to what is going on:
---------------------------------------------------------
auto fun()
{
 struct Result {
   this(int u) {}

   auto bar() {
       return Result(0);
   }
 }
 return Result();
}

void main() {
 auto t = fun();
 auto a = t.bar();
}
---------------------------------------------------------
Compiled with -inline:
t.d(7): Error: function t.fun is a nested function and cannot be
accessed from main

It seems what is happening is that bar is being inlined in main, but dmd doesn't know where to get the new fun.Result's context pointer from.

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Don <clugdbug@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |clugdbug@yahoo.com.au
           Severity|regression                  |normal


--- Comment #3 from Don <clugdbug@yahoo.com.au> 2011-12-21 14:36:24 PST ---
This isn't a regression. The reduced test case behaved the same in 2.026, which was the first version that could compile 'auto' functions.

This is probably a duplicate of bug 4724 (which involves -inline).
Could also be a dup of bug 4286 or bug 4841 (which involves -inline, but uses
delegates and alias templates)
Bug 5941 seems to be simplest test case for this species of bug.

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Nils <nilsbossung@googlemail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |nilsbossung@googlemail.com


--- Comment #4 from Nils <nilsbossung@googlemail.com> 2013-01-26 01:33:38 PST ---
Can't reproduce with the original test case, but this version still fails:

auto fun()
{
 int i;
 struct Result {
   this(int u) {}

   auto bar() {
       i = 42;
   }
 }
 return Result();
}

void main() {
 auto t = fun();
 t.bar();
}

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Denis Shelomovskij <verylonglogin.reg@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |verylonglogin.reg@gmail.com
         Resolution|                            |DUPLICATE


--- Comment #5 from Denis Shelomovskij <verylonglogin.reg@gmail.com> 2013-06-10 16:46:20 MSD ---
Mark it as a duplicate and add failing test from Comment 4 to Issue 4841.

*** This issue has been marked as a duplicate of issue 4841 ***

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